Maybe this will help others.
Example use case:
- I have a "car starting and driving" cue that is made up of a couple sub-cues (including one that loops).
- I'd like to reuse this cue several times in my production.
- I created this as a "Callable Cue" because it is easy to reuse and easy to tweak in one place.
- In some cases, after the cue has started, I'd like to lower the level of the looping sound (e.g. so that it can continue under dialog).
After some trial and error, I realized that it had to do with the order of the cue list. I'd previously had all of my Callable Cues at the end of my cue list. After moving the Callable Cue up earlier in my cue list (before my desired "Level Change" cue), I was able to reference it as needed.
Perhaps the best practice is to put all Callable Cues at the beginning of the cue list instead.